VÎLCEANU is moderately radioactive, which has caused its population to be affected by numerous mutations.  Those that are not deleterious (and some are even beneficial) have been passed down through the generations by various branches of its people.  The Vîlceanuvians have then sorted themselves into various camps based on their outward appearances.  There is no prejudice behind this practice, as all peoples are considered equal.  Those who bear closest resemblance simply live in the same place and are ruled by the same elected Chief.  Mating is strictly exogamous, taking place only between members of different camps.  When children are born, they are closely examined and are usually judged to belong to one or the other of their parents.  In rare cases a child is deemed to obviously belong in some other camp, and this is not taken as a sign of infidelity or dishonor.  The child must, however, go off to live with an adoptive parent of the appropriate phenotype.  There are elaborate and oft-told Vîlceanuvian myths which explain the origin of their various subtypes, and which are performed theatrically in immense amphitheatres.  Those afflicted by lethal mutations are granted the great honor of participating in the finale of these plays.  Tourism is politely discouraged.